Hi Oxa,
I have never traded football and have only a feeble knowledge of the round ball version of football but given the immense amount of money traded it may be worth a look.
It seems to me scoring a goal is maybe a rare event and Poisson models could be appropriate, what do others think?
Also it appears a key player is the goalkeeper: when penalty shootouts decide the fate of teams the goalkeeper's record in saving penalty shots become paramount.
Are you able to graph the influence of this?